734 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



female long and finger-like; papilla at the opening of the oviduct 

 small and rudimentary. 



Color uniform gray or gray-white, spotted with black pigment 

 arranged more or less regularly. Half a millimeter from the edge of 

 the carapace runs a dark line, wide in the center of each side, narrower 

 toward the anterior and posterior ends. 



There are also two black triangles in the anterior portion of the 

 carapace, one in front of each lateral eye, consisting of large spots 

 connected at the apices by bands. 



The males described by Bouvier are less«pigmented than the females. 

 The testes are two-lobed as in longicanda. In addition to the regular 

 peg and capsule, there is also a rounded lobe and a long, pointed stylet 

 on the posterior border of the basipod of the second legs, and two 

 unequal papillse on the anterior border of the basipod of the third legs. 



Length, 22.5 nmi. ; length of carapace, 13 mm. ; breadth of carapace, 

 11 mm.; length of abdomen, 7.5 mm.; width of lobes, 1.5 mm. Male 

 smaller. 



Ilahitat. — The two females described by Cornalia were found on the 

 body of a cat-fish {Doras 7i^V/ty' Valenciennes) which frequents the rivers 

 of Central America. 



{doradk = from generic name of host.) 



In the Annales de la Societe Entomologique de France, ser. 1, VI 

 (1837), Bulletin, p. 13, we find the following: 



M. Audouin presente deux individus d'un crustace singulier, qui a beaucoup d' ana- 

 logic avec I'Argule foliace de Jurine, mais qui en differe surtout par 1' absence de 

 ventouses aux pattes anterieures, et par sa taille, qui depasse un centimetre et demi. 



Ce crustace a et6 trouve a Cayenne par M. Lacordaire; il est parasite sur un 

 poisson nomm6 Aymara, dont la chair est tres-estimee, et qui vit dans toutes les 

 rivieres. M. Audouin en donne la description et la regarde comme le type d'un 

 nouveau genre, auquel il assigne le nom de Dolops. II dedie cette espece a 

 M. Lacordaire. 



Dolops Lacordairei. Ce nouveau genre sera decrit en detail et figure. 



As Thorell has pointed out, this "Dolops" is identical with Heller's 

 Gyropeltis, or at least very closeh^ related to it. The promised descrip- 

 tion was never published, but M. Geay has recently obtained from 

 practically the same locality (Guiana instead of Brazil), and on exactly 

 the same fish, the "A3'mara," a species oiDoIoj/s^ which Bouvier (1899*) 

 has decided is the same as Audouin's two specimens, and for which 

 he gives the following description: 



DOLOPS REPERTA Bouvier. 

 Plate XXVII, fig 87. 



Oyropeltis repcrtn Bouvier, 1899^ 

 Dolops reperta Bouvier, 1899^. 



Carapace suborbicular, somewhat narrowed anteriorly, nearly cov- 

 ering all the feet. Abdomen broad, triangular, widest at the center. 



